Method of tanning chamois, buckskins, or other leather



Patented July 29, 1930. V

UNITED STATES Y AUGUST Enns'r, or JOHNSTOWN, NEW YORK METHOD OF TANNING CHAMOIS, BUGKSKINS, OR OTHER LEATHER No Drawing.

This invention relates to tanning fur skins,

Application filed May 8, 1928. Serial No. 276,199..

mg the treatmentguntil the skins become such as chamois, buckskins or the like and has tanned and then Washing, drying and scourfor its Object to provide a method whereby an easily washable strong leather that can be dyed is produced.

This method consists in-the following:

7 After the skins are limed, hated and' pickled in the usual manner they areplaced a revolving drum containing formaldehyde in which they are treated fora perlod of about three-quarters of an hour; Thereupon V sod oil or other degras such as Moellen degras dissolved in soap and soda is added to the tormaldehyde bath and the treatment of the skins therein continued until the same become tanned. The skins are removed, washed, dried, and secured.

F or clarity in this specification the following definitions of theterms used above are given.

Degras may be defined as any and all greases extracted from oil tanned skins.

Moellen degras may be defined as the do-- gras pressed out from skins tanned with 1 o 7 see 011.

Sod oil may be defined as the greases obtained by washing the oil tanned skins in an alkali such as soda or potash solution and treating the fat liquor obtained with sulto said bath degras dissolved in soap and soda the treatment is continued until the skins become tanned, then they are washed,

dried and scoured.

2. A method of tanning leather such as chamois, buckskins or the like consisting in ing said skins.

In testimony whereof I afiix my signature.

'- AUGUST ERNST.

first liming, hating and pickling the skins,

then subjecting them to a treatment under motion in a bath containing formaldehyde i for a period of approximately forty five minutes, then on adding to said bath Moellen degras dissolved in soap and soda, continue CERTIFICATE OF CORRECTION.

Patent No. 1,771,490. Granted July 29, 1930, to

AUGUST ERNST It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 7, for the word "bated" read bathed, line 25, for "sod" read cod, and in claims 1 and 2, lines 34 and 35, respectively, for "hating" read bathing; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of September, A. D. 1930.

M. J. Moore, (Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No, 1, 771,490. Granted July 29', 1930', to-

AUGUST ERNST.

It is hereby certified that Certificate of Correction issued September 9,1930,

was erroneously drawn as to the error in claim 2, and that this Certificate? should have read "in claims l and 2, lines 34and 44, respectively, for "hating read" bathing"; that the said Certificate may conform to the records of. the office;

Signed and sealed this 30th day of September, A. D. 1930.

M. J. Moore, (Seal) Acting Commissioner of. Patents. 

